<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
   .box{
            width:100px;
            height:100px;
           background-color: rgb(49, 46, 46);
            margin: 100px auto;
            display: flex;
            flex-direction:column ;
            justify-content: space-around;
            align-items:center;
   }
   .box>div{
            width:20px;
            height:20px;
            background-color: red;
            border-radius: 50%;
         
       }
       .one{
        align-self:flex-end;
       }
       .three{
        align-self:flex-start;
       }
     
    </style>
</head>
<body>
    <div class="box">
        <div class="one">1</div>
        <div class="two">2</div> 
        <div class="three">3</div> 
    </div>
</body>
</html>